Overview
The MAX232DWE4 is a dual RS-232 driver and receiver integrated circuit manufactured by Texas Instruments. This component is designed to facilitate communication between TTL/CMOS logic levels and RS-232 serial interface standards. It operates from a single 5V power supply and includes a capacitive voltage generator to produce the necessary voltage levels for RS-232 communication.
The MAX232DWE4 is part of the MAX232 family, known for its reliability and compliance with TIA/EIA-232-F and ITU recommendation V.28 standards. It is widely used in various applications requiring serial communication, such as battery-powered systems, terminals, modems, and computers.
Key Specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Category | Integrated Circuits (ICs) - Interface - Drivers, Receivers, Transceivers |
| Package | 16-SOIC (0.295", 7.50mm Width) |
| Type | Transceiver |
| Protocol | RS232 |
| Number of Drivers/Receivers | 2/2 |
| Duplex | Full |
| Receiver Hysteresis | 500mV |
| Data Rate | 120Kbps |
| Voltage - Supply | 4.5 V ~ 5.5 V |
| Operating Temperature | 0°C ~ 70°C |
| Mounting Type | Surface Mount |
| ESD Protection | ±15kV Human-body model (HBM), ±8kV IEC61000-4-2 Contact discharge, ±15kV IEC61000-4-2 Air-gap discharge |
Key Features
- Meets or exceeds TIA/EIA-232-F and ITU recommendation V.28 standards.
- Operates from a single 5V power supply with 1µF charge-pump capacitors.
- Includes a capacitive voltage generator to supply RS-232-F compliant voltage levels.
- Two drivers and two receivers.
- Low supply current: 8mA typical.
- ESD protection for RS-232 bus pins: ±15kV Human-body model (HBM), ±8kV IEC61000-4-2 Contact discharge, ±15kV IEC61000-4-2 Air-gap discharge.
- Each receiver converts RS-232 inputs to 5V TTL/CMOS levels with a typical threshold of 1.3V and hysteresis of 0.5V.
- Receivers can accept ±30V inputs and have shorted and open fail-safe features.
Applications
- Battery-powered systems.
- Terminals.
- Modems.
- Computers.
- Any system requiring RS-232 serial communication.
Q & A
- What is the MAX232DWE4 used for?
The MAX232DWE4 is used to facilitate communication between TTL/CMOS logic levels and RS-232 serial interface standards.
- What are the key specifications of the MAX232DWE4?
The MAX232DWE4 operates from a 4.5V to 5.5V supply, has a data rate of up to 120Kbps, and includes two drivers and two receivers. It also features ESD protection and operates in a temperature range of 0°C to 70°C.
- What type of package does the MAX232DWE4 come in?
The MAX232DWE4 comes in a 16-SOIC package with a width of 0.295 inches (7.50mm).
- What is the ESD protection level of the MAX232DWE4?
The MAX232DWE4 has ESD protection of ±15kV Human-body model (HBM), ±8kV IEC61000-4-2 Contact discharge, and ±15kV IEC61000-4-2 Air-gap discharge.
- What are the typical applications of the MAX232DWE4?
The MAX232DWE4 is typically used in battery-powered systems, terminals, modems, and computers.
- How does the MAX232DWE4 generate the necessary voltage levels for RS-232 communication?
The MAX232DWE4 uses a capacitive voltage generator with 1µF charge-pump capacitors to generate the necessary voltage levels from a single 5V power supply.
- What is the supply current of the MAX232DWE4?
The MAX232DWE4 has a typical supply current of 8mA.
- Can the MAX232DWE4 handle high input voltages?
Yes, the receivers of the MAX232DWE4 can accept input voltages up to ±30V.
- What is the data rate capability of the MAX232DWE4?
The MAX232DWE4 can operate up to a data rate of 120Kbps.
- Is the MAX232DWE4 RoHS compliant?
Yes, the MAX232DWE4 is RoHS compliant.
